Heater



.8. J. LUKASZEWSKI.

HEATER.

APPLICATION FILED rf.zs.191e.

1,329,052, Patented Jan. 27, 1920.

2 SHEETS-SHEET I.

@Mom/1,420@

S. J. LUKASZEWSK.

HEATER.

APPLICATION FILED FEI1.23.I9I6.

Pate'ced Jan. 27, 1920.

2 SHEETS-SHEET 2.

@mum/Ito@ UNiTEDsrATEs PATENT OFFICE.

srnNIsLAWJ. LUxAszEWsxI, orv DETRoIn MICHIGAN.

Haaren.

` A Specicatidn of Letters liat-ent.

'Patented .1311.27, 1920.

d Application 'ii-led `February 23, 1916. Serial No. 79,881.

T0 all whom imag concern.'

Be it known that I, STANISLAW J LUKAszEwsKI, a citizen of the United States, `and residing at Detro1t,.i n the county of Wayne jarring of thevehiclev whenin motion nor heater co1 s.

. Similar reference charactersv refer to like by blasts of air. 1'

This invention consists in the novel details of construction illustratedin the accompanying drawings fand particularly pointed out in the 'claims'. j

In the accompanying drawings Figure 1 is an elevation vof `this improvedV heater.'y

Fig. 2is a vertical section thereof on a plane passing through the center of `t'he air 'pipe and of the air chamber.vk Fig. 3 is a horizontal ysection of the connector v between thev circulati system ofthe englne and the parts throughout the several views.

The present structure conslsts generally of a pair of heating coils and the shell therefor, a'bu-rner and its igniter, a casing for the burner, which casing supports the.

'shell and heating coil, and an air chamber connected to the casing.y fIt is on the same. general lines as that shown inmy prior application, No. 42,083, filed` July 26, 1915.

The heating coils 1 and 2 preferably have the same number of turns, and their ends are welded, brazed or otherwise connected into the fittin 4` which'may vsecured to the V.shell of t e heater by means of screws l 5,- as shown in Fig. 3, The cylindrical shell inclosingthe coils is preferably of two :tubular sheet metal members 6 and 7 with `a layer 8` of asbestos between them. A supply pipe 9 and a discharge pipe 10, ypreferably inthe form of anipple, may screw into these fittings. A window 12 ofy any desiredchar-f acter may be provi-dedl at any convenient rlocation. Y v

The Casing that supports the Shen win preferably 'be' of twoA sheets 14 and 15 of metal With a sheet 16 of asbestos between" these sheets around the burner. aThe ends of this casing will preferably be rounded and of a proper diameter to conform to the shell for the coils and to the air chamber 17.

This air chamber isY preferably cylindrical and provided' with a cap 18 havin air inlets 19l and a` small table 2O to w ich the hood 21 may be secured by means of vva small bolt. This hood has short chimneysl 24 formed by properly pressing of theV metal and a circumferential flange 25. A bailleplate 26 may extend between the lhead and hood. The casing is formed with a cover 27 to cl'ose jthe space between the shell and air chamber. This air chamber is so far from the shell. for the heating coils'that it will always remain cool, which results in the air therein always descending'and forcing the hot air in the shell to ascend. Y. f

The upper end of the shell..` is closed by means of a head 29 having a circumferential flange30` that fits aroundv the shell. Holes 33 inthe head permit the escape of the burnt gases,and small pedestals 34 maybe formed on the head to `support cooking. pots or pansa `-sufficient distance from the head to prevent @them from stopping the holes 33.

A baiie 35 may bevsecu'red to the lower face of the"head to restrain the flow of the hot gases.

A hood isdetachably mounted on the shell` and consists of a bodyl'38 -having a lowerl Hange 39`adapted to fit around the flange 30 of thehead 29, and this flange 39 is provided with a'bayonet 'slot 4 0 *tov receivevthe screw 41 and thus'secure the hood tothe shell. A cylindrical band 42 is supported by the skirting43 mountednon the body 38, by means `of the ears 44. A cap 45 has down- "wardly extending ears 46 that are attached to the band 42. `This hood prevents blasts 'of air from' passing into and down within the shell while permitting all products of combustion to escape.

The burner and its igniter are'mounted lwithin the' casing andare constructed as follows. An inclined tube 50 has its lower eiid threaded at51 to connect toa supply.

pipe, and passes through a hole in the cas- V111g and receives anut 53 'and an inclined washer 52 bymeans of which they web 54 1s .drawn tightly against Ithe casing to lock the burner, in position. valve body 55 ron- .nects to` this web 54 and to the tube 50.

Small plates 56 and 57 are connected to the shell and casing and to each other. The

plate 57 preferably extends downbelow the opening through which the hollowl screw 58 eXtends, which screw engages in the threaded end of the valve body 55, being held from turningl by the nutf59.y A needle valve 60 is mounted in this body 55 and its seat 62 is preferably detachable', being heldin position by means of a jam nut 63, which nut also holds theshield 64 in position. By havingl the fuel supply tu'be 50 at. an incline and more nearly horizontal than yelgtical, lno check valve in this tube is required as the fueltherein will flow constantly and will not pulsate as is -the case with vertical supply tubes.

A U-shaped mixing tube has parallel arms i 65 and 66, one above the other7 the lower be.- ing in alinement with the fueldischarge past sage 67 in the valve seat 62.

rlhe upper arm is fitted into an opening in the outer shell 68 of the burner, the upper portion of which is curved inwardly to formy a burner ring provided with slits 69 through which the mixed air'and volatilized fuel may pass. it frusto-conical thimble 71 its within this ring at its upper end and has a flange 72 thatk extends across the lower end' of the shell 68 to complete the fuel chamber. A f ew small holes 73 in this thimble 71 in line with the arm 65 of the mixing tube, permit -a small amountof the fuel to pass into the space around the stem 74@ so that this stem l and the valve body may Ibe heated.

lte

pipe 89.

A pin 75 may be secured to the bottomof the casing vand on it may be mounted a trough 76. A perforated thimble 77 is mounted on the trough and passages 78 sup'- ply air to the interior of this thimble. An annular plate 7 9,'substantiallyU shaped in cross-section7 connes the flame and also sup-` plies the flame with air. An ignition point 80 is mounted onv this trough while an arm 82 supports a sparhl plug 33 having an ignition point. 8a. A. binding lpost 85 is mountedon Vthe cover 27 of the casing and connects V to the first by means of a wire 86. By placing the binding post 85 between the shell and air chamber there is little danger of it being broken.

lin the trough 76V is a vertical drain passage 37 that determines the' height ofthe liquid fuel in the trough. The bottom of the arm 66 of ,the mixing tube is formed with a pocket 88 from which the fuel is drained to the trough 76 by means of a short The tube 50 may4 be filled with filter gauze if desired. The plate 64 prevents the flame from the fuel in the trough 76 from -igniting the fuel that flows from the opening 67.

The heater coils l and 2 are always full of the liquid to be heated. To ignite the fuel at the burner, the valve 60' is turned .back to slightly open the passage 67 which will permit fuel to be forced from this passage across into vthe lower arm 66 of the mixing tube. The fuel iiows down the pipe 89 into the trough 7 67 where its vapors may be ignited by a spark between the `points 80 yand 84. The Haine from this yliquid passesup around the body 55 and tube 50 and soon volatilizes the liquid fuel. lvVhen volatilized, this fuel will ,mix with airin the mixing tube and-pass into the ringk 68 and out through the small Aholes 73 and the slits`69. rlhe llame from the trough 7 6 will ignite this fuel vapor, which willI burn at these holes and slits, the flame at the holes 73 heating the stem 74; and thereby the body55 after the :dame in the trough 76 is extinguished'because of lack pf fuel.

Should the fuel in the trough 76 accumulate too"'rapidly, it lwill flow 0H" through the passage 87; A11 open mesh screen 95 placed above the perforated thimble l77 causes kthe flame'above the liquid fuel in the trough 76 to be of substantially even height throughout and to be very hot and blue and to give 'od substantially no smoke. v

lt is often/ desirable to the heater in operation whilethe automo ile is moving from place to place, especially when the vehicle is used by a physician, or for deliv-l ering goods and soliciting orders. fnsuch cases'7 andv even when the vehicle is stationary on very ywindy days, strong blasts' of air may pass around' the heater which would adect the Haine unless proper means are employed to protect it. This protection is secured by the use of an air chamber of ylarge diameter and of considerableheight,

rits

having restricted and shielded air inlets.'

Avblast of air from below will partly pass out through the openings 24 while a blast fromabove will ypartly pass out between the ange `25 and the YIair chamber. At all events, 4the flow of air downward in the air chamber will be substantially constant and quite slow. The bac-plate 26 assists substantially in thus regulating the dow of air through the openings 19 in thecap. order to prevent a flame from passing from this heater and igniting 'any gas which might be presentl in the air surrounding the casing, an air chamber mounted o n the other end of the casing and provided with a perforated top, and means to retard the flow of air into said air chamber through the perforations in said top comprising a hood hav- 'tween the shell and air chamber, a burner within the casing, a top for the air chamberv having a series of perforations, a lbaflleplate supported above the top, and a hoodmounted a'bove the baffle plate and top land having a circumferential flange extendlng below the top of Said y chamber, the top of said air chamber having a series of perforations below the baille plate.

3. In a heater, the combination of a casing, a cylindrical shell mounted thereon, a burner within the shell, the air in said shell being caused to rise by the heat from the burner, a 'cylindrical air chamber mounted on the casing parallel to the shell, a cap therefor provided with a series of air inlets andA a table7 a baille plate mounted on said table, and a hood supported by said table and having a cylindrical flange extending down below the top of said air chamber and also provided with a series of perforations above and within the edge of said baille plate.

STANISLAW J. LUKASZEWSKI, 

